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Abstract

Ayurveda is the world's oldest and most authentic medicinal system. The primary goal of Ayurveda is to maintain health and treat sickness. The primary objective of human existence is to live a long and disease-free life by slowing down the ageing process and increasing immunity through a healthy lifestyle.
Rasayan, a crucial branch of Ayurveda, focuses on rejuvenation, longevity, and overall well-being. It encompasses herbal formulations, lifestyle practices, and dietary guidelines that enhance physical and mental health by promoting cellular regeneration and immune strength. Rasayan therapy is traditionally used to delay aging, boost immunity, and improve cognitive functions. Key Rasayan herbs such as Ashwagandha, Brahmi, and Amalaki have shown scientific potential in neuroprotection, stress management, and anti-inflammatory effects.
 A  long  and  healthy  life  is  the  key  to  accomplish  the Purushartha Chatustaya in  human life as explained  in Ayurveda. Acharya Charak gave the first priority  to  long  life  among all  as  described  in  the  first  chapter  Deerghanjeevitiya Adhyaya. Among all the three snas viz. Praneshna, Dhaneshna & Parlokeshna, the Pranesna is  the  prime  factor  to  accomplish  anything  because  prana  is  the  base  for  the  others. This article explores the historical foundations, modern scientific validations, and potential applications of Rasayan therapy in holistic health and disease prevention